diff --git a/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisSettleBillServiceImpl.java b/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisSettleBillServiceImpl.java
index 9d5d93943..4ceb35095 100644
--- a/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisSettleBillServiceImpl.java
+++ b/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisSettleBillServiceImpl.java
@@ -229,6 +229,11 @@ public class EmisSettleBillServiceImpl extends EmisBaseService implements IEmisS
             throw  new EmisBizError(EmisBizErrorType.FAIL,"已核销，不允许操作");
         }
 
+        // 不允许操作，至少保留一单
+        if(old.getSendPieceSum()==1){
+            throw  new EmisBizError(EmisBizErrorType.FAIL,"不允许操作，至少保留一单");
+        }
+
         // 检查子账单是否可移除
         String billCodeStr=WaybillHelper.formatQueryValue((String) emisSettleBill.getParams().get("billCodeStr"));
         if(StringUtils.isEmpty(billCodeStr)){